EngageNY Math Tips for Parents 4 7 Grade 4, Module 7: Exploring Measurement with Multiplication What is this module about? In this final module, students build their competencies in measurement as they relate multiplication to the conversion of measurement units. Students explore multiple strategies for solving measurement problems involving unit conversion. What came before this module? Students explored decimal numbers and their relationship to decimal fractions. They learned to express a given quantity in both fraction and decimal forms and compared decimal numbers using the place value chart. What comes after this module? This is the final module of Grade 4. How can you help at home? • • As often as possible, notice and discuss customary units like ounces and pounds. Review time by asking questions, such as, “How many more minutes until the next hour? How many hours until the next day?” A pound-ounce conversion table A number bond decomposes 30 ounces to make a mixed unit of 1 pound 14 ounces Key Words and Ideas in this Module • • • Customary system of measurement: measurement system used in the United States that includes such units as yards, pounds and gallons Customary unit: e.g., foot, ounce, quart Customary units of measurement for liquid volume: cup(c), gallon (gal), pint (pt), quart (qt) • • • Metric system of measurement: base ten system of measurement used internationally that includes such units as meters, kilograms, and liters Metric unit: e.g., kilometer, gram, milliliter Customary units of measure for weight: pound (lb) and ounce (oz) Key Standards in this Module • • Use the four operations with whole numbers to solve problems. Solve problems involving measurement and conversion of measurements from a larger unit to a smaller unit. Two-Column Table Spotlight on Math Tools Module 7 focuses on customary measurement units (gallons, pints, yards, etc.). Students decompose them, convert them, and strengthen their sense of what each customary unit represents. Two-column tables are an important organizational tool that helps students see how the larger and smaller units relate to each other, as well as what a “unit” means in each situation, e.g., 16 ounces = 1 pound. Two-column tables also reappear as organizational tools in later years, such as when students learn simple linear functions and use the tables to calculate coordinate pairs. In this module, the structure of the table is provided for students in order to scaffold their learning, to record the conversion from larger to smaller units, and to see the multiplicative relationship between two units of measurement. Two different Two-Column Tables featuring time and customary measurements from Module 7 Sample problem from Module 7 (Lesson 10): One pumpkin weighs 7 pounds 12 ounces. A second pumpkin weighs 10 pounds 4 ounces. A third pumpkin weighs 2 pounds 9 ounces more than the second pumpkin. What is the total weight of the three pumpkins? Adapted from Eureka Math Tips for Parents, Prepared by Erin Schweng, Math Coach
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